Long-term changes of sodium column abundance at 24.6°S above the Atacama Desert in Chile P. Haguenauer, C. von Savigny, J. M. C. Plane, D. R. Marsh, W. Feng, R. Holzlöhner and M. Langowski A&A, 691 (2024) A49 Published online: 29 October 2024 DOI: 10.1051/0004-6361/202450656